Tapered threaded coupling



FIG. 1 is a front perspective view of the tapered threaded coupling showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a rear plan view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a side view thereof, with the opposite side view being identical thereto. 

The ornamental design for tapered threaded coupling, as shown and described. 